食品包装材料中油墨成分的迁移及溶出VIP免费

河北大学2012届本科生毕业论文（设计）食品包装材料中油墨成分的迁移及溶出摘要采用食品模拟物进行迁移实验，结合固相微萃取-气相色谱质谱联用技术（SPME/GC-MS），建立了食品包装材料印刷油墨中两种光引发剂溶出量的测定方法。研究了迁移温度和时间对光引发剂迁移的影响，以纯水和10%乙醇-水为食品模拟物，在4℃和45℃下迁移120min。模拟液用固相微萃取（SPME）技术进行萃取，对萃取头、萃取温度和时间进行了优化。利用GC-MS对目标物进行定量分析。结果表明，二苯甲酮和4-甲基二苯甲酮在0.03µg/L～1.0µg/L的范围内线性关系均良好（r2≥0.99），检测限分别为0.0012µg/L、0.0040µg/L。两种目标物在三个添加水平下，平均回收率为75.1%～95.6%，相对标准偏差均小于11.5%。本方法简单、快速、准确，能够满足食品包装的日常检验需要。关键词：食品包装材料；食品模拟物；气相色谱质谱法；光引发剂；迁移实验河北大学2012届本科生毕业论文（设计）MigrationanddissolutionofcomponentsinprintinginkoffoodpackingmaterialsABSTRACTFoodstimulantandsolidphasemicroextractiongaschromatography-massspectrometry(SPME/GC-MS)wereusedintheabstractionexperiment.Amethodforthedeterminationoftwokindofphotoinitiatorsmigratedfromtheprintinginkonthesurfaceoffoodpackagingmaterialhasbeendeveloped.Photoinitiatorsinthefoodpackagingsampleswereabstractedwithfoodstimulantattheconditionof4℃、45℃、120min.Theinfluenceoftemperatureandtimewereforphotoinitiators’abstractionwasstudyed.Abstractwasextractedbyasolidphasemicroextraction（SPME）technology.Extraction-fiber,temperatureandtimewereoptimized.ThetargetwasanalysisedbyGC-MS.Theresultsshowedthat,thelimitofdetectionforbenzophenoneand4-methylbenzophenonewas0.0012µg/Land0.0040µg/Lwithagoodlinearcorrelation(r2≥0.99)intherangeof0.03µg/L～1.0µg/L.Theaveragerecoveriesofthetwocompoundsatthreespikedlevelofwere75.1%～95.6%,withtherelativestandarddeviationwerelessthan11.5%.Themethodwassimple,rapid,accurateandcansatisfythedailyinspectionoffoodpackaging.Keywords:Foodpackagingmaterial；Foodstimulant；Gaschromatography-massspectrometry；Photoinitiator；Abstractionexperiment河北大学2012届本科生毕业论文（设计）目录1前言..................................................11.1食品安全问题............................................11.2油墨中的光引发剂........................................11.3食品模拟物..............................................11.4国内外对光引发剂迁移的研究..............................21.5本实验研究内容及意义....................................32实验部分..............................................42.1仪器与试剂..............................................42.2实验样品................................................42.3标准溶液................................................42.4实验方法................................................42.4.1样品前处理............................................42.4.2实验条件..............................................43结果与讨论............................................63.1光引发剂萃取条件的确定..................................63.1.1萃取头的选择..........................................63.1.2萃取温度和时间的选择..................................63.2光引发剂迁移实验........................................73.2.1迁移温度的选择........................................7河北大学2012届本科生毕业论文（设计）3.2.2不同食品模拟物的迁移..................................83.3方法评价................................................83.4实际样品的测定..........................................94结...